Generic source of perpendicular anisotropy in amorphous rare-earth transition-metal films

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Abstract

We show that the magnetic dipolar energy of antiparallel dipoles in the surface layers contributes to the intrinsic perpendicular anisotropy in amorphous rare-earth transition-metal films. The volume anisotropy energy density Ku of this contribution depends inversely on the thickness of the film. For an amorphous GdCo film with a thickness of 1000 the calculated Ku is on the order of 103 104 ergs cm3. Dependence of Ku on temperature and atomic concentration is also calculated.

Original languageEnglish (US)
Pages (from-to)1086-1089
Number of pages4
JournalPhysical review letters
Volume66
Issue number8
DOIs
StatePublished - Jan 1 1991

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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